تقرير
Feasibility of Observing Gamma-ray Polarization from Cygnus X-1 Using a CubeSat
| العنوان: | Feasibility of Observing Gamma-ray Polarization from Cygnus X-1 Using a CubeSat |
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| المؤلفون: | Yang, Chien-Ying, Chang, Yi-Chi, Liang, Hung-Hsiang, Chu, Che-Yen, Hsiang, Jr-Yue, Chiu, Jeng-Lun, Lin, Chih-Hsun, Laurent, Philippe, Rodriguez, Jerome, Chang, Hsiang-Kuang |
| سنة النشر: | 2019 |
| المجموعة: | Astrophysics High Energy Physics - Experiment |
| مصطلحات موضوعية: | Astrophysics - Instrumentation and Methods for Astrophysics, High Energy Physics - Experiment |
| الوصف: | Instruments flown on CubeSats are small. Meaningful applications of CubeSats in astronomical observations rely on the choice of a particular subject that is feasible for CubeSats. Here we report the result of a feasibility study for observing gamma-ray polarization from Cygnus X-1 using a small Compton polarimeter on board a 3U CubeSat. Silicon detectors and cerium bromide scintillators were employed in the instrument models that we discussed in this study. Through Monte Carlo simulations with Geant4-based MEGAlib package, we found that, with a 10-Ms on-axis, zenith-direction observation in a low inclination, low altitude earth orbit radiation background environment, the minimum detectable polarization degree can be down to about 10\% in 160 - 250 keV, 20\% in 250 - 400 keV, and 65\% in 400 - 2000 keV. A 3U CubeSat dedicated to observing Cygnus X-1 can therefore yield useful information on the polarization state of gamma-ray emissions from the brightest persistent X-ray black-hole binary in the sky. Comment: 11 pages, 7 figures, accepted on June 11, 2020, for publication in The Astronomical Journal |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.3847/1538-3881/ab9caf |
| URL الوصول: | http://arxiv.org/abs/1911.12958 |
| رقم الأكسشن: | edsarx.1911.12958 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.3847/1538-3881/ab9caf |
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